⭐️ Impl: ValueInjectable+Helpers

ios/Temp/ValueInjectable+Helpers.swift

@@ -0,0 +1,48 @@
+//
+//  ValueInjectable+Helpers.swift
+//  react-native-ios-modal
+//
+//  Created by Dominic Go on 9/27/24.
+//
+
+import Foundation
+import DGSwiftUtilities
+
+
+public extension ValueInjectable {
+
+  /// Lazily provides a optional fallback value, and set if needed
+  func getInjectedValue<T, U: RawRepresentable<String>>(
+    forKey key: U,
+    fallbackValueProvider: (() -> T?)? = nil
+  ) -> T? {
+
+    if let value = self.injectedValues[key.rawValue] as? T {
+      return value;
+    };
+
+    let fallbackValue = fallbackValueProvider?()
+    guard let fallbackValue = fallbackValue else {
+      return nil;
+    };
+
+    self.injectedValues[key.rawValue] = fallbackValue;
+    return fallbackValue;
+  };
+
+  /// Lazily provides a fallback value, and set if needed
+  func getInjectedValue<T, U: RawRepresentable<String>>(
+    forKey key: U,
+    fallbackValueProvider: () -> T
+  ) -> T {
+
+    if let value = self.injectedValues[key.rawValue] as? T {
+      return value;
+    };
+
+    let fallbackValue = fallbackValueProvider()
+    self.injectedValues[key.rawValue] = fallbackValue;
+
+    return fallbackValue;
+  };
+};